Domain Eucaryota
   Subdomain Amoebota Doweld (2001)
     Kingdom Spongiobiota Doweld, 2001 [monotypic]
       Subkingdom Spongiobiotina Doweld, 2001 [monotypic]
         Phylum Spongiozoa Doweld, 2001
           Subphylum Spongiozoina Doweld, 2001
             Class Spongiatea Doweld, 2001
               1 Subclass Plakinatinea Doweld, 2001
               2 Subclass Axinellatinea Doweld, 2001
               3 Subclass Spongiatinea Doweld, 2001